New NetPing from Jeff Key
Jeff Key has updated NetPing. NetPing is one of the primary examples I use when teaching newbies C#. It's a nice utility that everyone can easily understand. It's full of nice examples of Threading, WinForms, etc.
It's also a cool addition to utils collections for the IT wonk. He's updated it to include launching Remote Desktop, launch Computer Management and NetworkDriveInfo (another nice util).